exfatfs.h (29.08.09)
Definitions of structures and constants used in exFAT file system.
- Copyright (C) 2009, 2010 Andrew Nayenko
+ Free exFAT implementation.
+ Copyright (C) 2010-2018 Andrew Nayenko
- This program is free software: you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
+ the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef EXFATFS_H_INCLUDED
#define EXFATFS_H_INCLUDED
#include "byteorder.h"
+#include "compiler.h"
typedef uint32_t cluster_t; /* cluster number */
#define EXFAT_FIRST_DATA_CLUSTER 2
+#define EXFAT_LAST_DATA_CLUSTER 0xfffffff6
#define EXFAT_CLUSTER_FREE 0 /* free cluster */
#define EXFAT_CLUSTER_BAD 0xfffffff7 /* cluster contains bad sector */
#define EXFAT_CLUSTER_END 0xffffffff /* final cluster of file or directory */
+#define EXFAT_STATE_MOUNTED 2
+
struct exfat_super_block
{
uint8_t jump[3]; /* 0x00 jmp and nop instructions */
uint8_t __unused2[397]; /* 0x71 always 0 */
le16_t boot_signature; /* the value of 0xAA55 */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_super_block) == 512);
#define EXFAT_ENTRY_VALID 0x80
#define EXFAT_ENTRY_CONTINUED 0x40
+#define EXFAT_ENTRY_OPTIONAL 0x20
-#define EXFAT_ENTRY_EOD (0x00)
#define EXFAT_ENTRY_BITMAP (0x01 | EXFAT_ENTRY_VALID)
#define EXFAT_ENTRY_UPCASE (0x02 | EXFAT_ENTRY_VALID)
#define EXFAT_ENTRY_LABEL (0x03 | EXFAT_ENTRY_VALID)
#define EXFAT_ENTRY_FILE (0x05 | EXFAT_ENTRY_VALID)
#define EXFAT_ENTRY_FILE_INFO (0x00 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)
#define EXFAT_ENTRY_FILE_NAME (0x01 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)
+#define EXFAT_ENTRY_FILE_TAIL (0x00 | EXFAT_ENTRY_VALID \
+ | EXFAT_ENTRY_CONTINUED \
+ | EXFAT_ENTRY_OPTIONAL)
struct exfat_entry /* common container for all entries */
{
uint8_t type; /* any of EXFAT_ENTRY_xxx */
uint8_t data[31];
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry) == 32);
#define EXFAT_ENAME_MAX 15
le32_t start_cluster;
le64_t size; /* in bytes */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_bitmap) == 32);
+
+#define EXFAT_UPCASE_CHARS 0x10000
struct exfat_entry_upcase /* upper case translation table */
{
le32_t start_cluster;
le64_t size; /* in bytes */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_upcase) == 32);
struct exfat_entry_label /* volume label */
{
uint8_t length; /* number of characters */
le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_label) == 32);
#define EXFAT_ATTRIB_RO 0x01
#define EXFAT_ATTRIB_HIDDEN 0x02
uint8_t mtime_cs; /* latest modification time in cs */
uint8_t __unknown2[10];
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_meta1) == 32);
#define EXFAT_FLAG_ALWAYS1 (1u << 0)
#define EXFAT_FLAG_CONTIGUOUS (1u << 1)
uint8_t name_length;
le16_t name_hash;
le16_t __unknown2;
- le64_t real_size; /* in bytes, equals to size */
+ le64_t valid_size; /* in bytes, less or equal to size */
uint8_t __unknown3[4];
le32_t start_cluster;
- le64_t size; /* in bytes, equals to real_size */
+ le64_t size; /* in bytes */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_meta2) == 32);
struct exfat_entry_name /* file or directory name */
{
uint8_t __unknown;
le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_name) == 32);
#endif /* ifndef EXFATFS_H_INCLUDED */